Draft regulator



W. W. SMALLEY.

DRAFT REGULATOR.

. APPUCATION FILED JAN. 11 I922.

Patented Sept. 12, 15122 ml Q 1/ Bymfm' ATTORNEYS Patented Sept. 12, 1922.

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DRAFT REGULATOR.

' Applicationfild January 11, 1922. "Serial No. 528,462.

To all whomz't may concern Be it known that. 1, WILLIAM W. SMALLEY,

a citizen ofthe United States,- and a resident:

of, Chicago, inthe county: of Cook and State of Illinois, have invented a new and useful.

Improvement i'nDraft Regulators, of which the following is a full, clear, andexact description. 1 1 if 1 My invention relates to improvements 1n draft regulators, and it consists inthe combinations, constructions, and arrangements herein described and claimed.

,afurnace' D A further object of my invention is to: provide a device of the character described An object of my invention is toprovide a draft regulator which is automatioally controlled-and which is adaptedwtoropen the draft door andto-rclose the check draft of which is simple in construction, and which is not likely to easily get out of order.

Other objects and advantages will appear in the following specification, and the novel features of the inventionwill-be particu larly pointed out inthe appended: claims.

My invention is illustrated in the accompanying drawings, forming part of this ap;

plication, in which Figure 1 is a side elevation of the device as shown operatively attached to a draft door. and a check draft ofafuirn'ac F igure 2'1sa front eleVat-mnofthe device,

Figure 3 is a plan view' ofthe device as shown secured to the furnace,- and Figure 415 a section along the line '4if4t ,In carrying out my invention, I 'provide an L-shaped arm 1 which" is securedto a furnace 2 by means-of. bolts ('see' Figure The free end 4- of the arm 1 :is curved 1 so as toconform' withthe under side of'an alarm clock 5. I Theportion 4t of the arm 1* has secured thereto a curved plate :6, the

platexhaving slotss? therein through which the legs 8 of: thealarm clock 5 are adapted to extend- Thele'gs 8 of the alarm clock 5' are threaded so as to receive nuts 9 thereon; With this constructionyth'e clock 5 is rigidly secured t'o the armed. The purpose for. providing elongated: openings or slots 7 in thelplatefl is, that the :plate 6 may receive any type of alarm clock, since the legs 3 of any alarm clock may be readily received in the slots 7. The clock 5 is provided with the usual time winding and alarm winding stems 10 and 11, respectively.

As clearly shown in Figure 3, the arm 1 carrlesa rod 12on which a frame 13 is pivotally mounted. The frame 13 is held in place by means of a nut 14 which is screwed on the free end of the rod 12. The rod 12 has a coil spring 15 wrapped therearound, one end of the spring being disposed under the frame 13 and the other end of the spring being disposed over the arm 1 (see Figure The spring tendsto normally swing theframe 13 into the raised position shown cable 18 is secured to the ring 16 and is passed over pulleys 19 which are carried by brackets 20, the brackets being secured to thesleeve 21 (see Figure 11). The free end of the cable 18 is secured to the checkdraft 22 of a flue 23. The ring 17 has a cable 21 secured thereto, the cable being connected to draft door From this construction it will'be observedthat when the frame 13 is swung from the horizontal position shown inFigure 1 to the raised position, it will automatically open the draft door" 25' and at the same time will close the check draft 22.

In Figure 4, I have shown a simple means by which the frame 13 is held in a horizontal position against the tension of the spring 15. This means comprises a; bushing, 26 which is carried by the arm 1 and in which is rotatably mounted a locking member27. The locking member hasa head 28 integral therewith and is threaded at its free end so as to receive a nut 29 thereon. The head 28 and the nut 29 permit free rotation of the member 27 and prevent any longitudinal.

Then the member 27 is ro-' member will hold the finger 32 and will prevent the frame 13 from being swung up wardly about the rod 12.

The member 27 is adapted to be actuated by means of the clock 5 so as to automatically release the frame 13 at a predetermined time. An arm 33 is screwed onto the alarm winding stem 11 and is operatively connected by means 'of a link 35 to an arm 34 which is carried by the member 27. When the alarm is actuated, it rotates the stem 11 which swings the arm 33 from the full line position to the dotted line position shown in Figure 2, and will swing the arm 34: so as to bring the slot 30 to the top of the member 27, whereby the finger 32 may be swung away from the bore 31 by means of the spring actuated frame 13.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The alarmof the clock 5 is set for any predetermined time and the member 27 is disposed so as to retain the finger 32 in the bore 31. When the alarm is set off, it will rotate the arm 33 so as to bring the slot 30 to the upper side of the member 27 as heretofore described. The spring 15 will then swing the frame 13 into the raised posit-ion shown in Figure 1, since the finger 32 is now free to pass from the bore 31 and through the slot 30. As the frame 13 is swung upwardly by the spring 15, it will open the draft door 25 and will close the check draft 22. The air will now enter the furnace 2 by means of the door 25 and will start the fire burning briskly in the ordinary manner.

It will be seen from the construction shown in Figure 2 that the arm 34: is not as long as the arm 33. actuated, it will swing the arm 34-until the latter isin' alinement with the link 35 as shown in the dotted-line position of Figure 2. The arm 33 willbe prevented from rotating any further and will automatically stop the alarm spring from unwinding. When the arm 34 is in the dotted line position, the slot 30 is disposed at the top of the member 27 and permits the finger 32 to be released from the bore 31. In setting? the device for the next operation, the frame 13 is swung into a horizontal position so as to permit the finger 32 to pass through the slot 30 and into the bore 31. The arm 34 isthen swung from the dotted line position to the full line position of Figure 2 and will in turn swing the arm 33 from the dotted line position to the full line position. a The swinging of the arm 3a to the full line position will swing the slot 30 to the position shown in Figure 4 and will prevent the finger 32 from passing through the slot. It will be noted that the alarm is automatically wound at each setting, and I therefore When the alarm is provide a simple device in which the clock need never be removed so as to permit the winding of the alarm.

From the foregoing, it will be observed that I have provided a simple device which is efficient for the purpose intended and which is automatic in operation. F urthermore, the device requires very little attention except for the winding of the clock so as to keep the latter running.

I claim:

1. A device of the type described comprising an L-shaped bar, a spring-pressed frame pivotally carried by said'bar, the free end of said frame adapted to. be normally disposed in the bend of said L-shaped member, a sleeve carried by saidbar, and having a slot therein, a finger carried by the free end of said frame and adapted toenter said slot and to be received'in said sleeve, a clock having an alarm winding stem, and means operatively connecting said stem to said sleeve, whereby the rotation of said sleeve will release said frame. 1

2. In a device of the type described, a bar, a cylindrical member rotatably mounted in said bar and having a bore therein, said member having a longitudinal slot communicating with said bore, an arm carried by said member, a clock carried by said bar and having an alarm winding stem, 2. second arm secured to said stem, and a link connecting said first and said second named arms together. 1

3. In a device of the type described, a bar having a curved portion therein, an" arcuate-shaped plate secured to the curved portion of said arm andhaving circumferentially extending slots thereima clock -having legs adapted to project through said slots, said legs being threaded, and nuts disposed on said legs and being adapted to secure said legs to said plate; I

4:. In combination with a' furnace having a draft door and a check draft, of a bar secured to said furnace, a spring-pressed frame pivotally secured to said bar and having an integral finger, a sleeve-rotatably mounted in said bar and having a slot therein adapted to receive said finger, cables operatively connecting said draftvdoor and said check draft to said frame, a clockcarried by said bar and having an alarm winding stem, and means operatively connecting said stem to said sleeve, whereby rotation of said sleeve will release said frame.

5. In a device of the type described,=a' bar, a cylindrical member rotatably mounted in said bar and having a bore therein, said member having a longitudinal slot communicating with said bore, an arm carried by said member, a clock carried by said bar and having an alarm winding stem, 2. second arm secured to said stem, and a link connecting said first and said. second named arms together, said second named arm being longer than said first named arm.

6. The combination With a furnace having a draft door and a check draft, of a frame secured to said furnace, means carried by said frame for operating said draft door and said check draft, means adapted to normally lock said door operating means against movement, a clock, and means operatively connecting the alarm stem of the clock With said locking means, the means connected with the alarm stem of the clock being adapted to lock the stem against rotation after the stem has rotated through a portion of a circle.

WILLIAM W. SMALLEY. 

